SEV Biblia, Chapter 14:39
Y al séptimo día volverá el sacerdote, y mirará; y si la plaga hubiere crecido en las paredes de la casa,
John Gill's Bible Commentary
Ver. 39. And the priest shall come again the seventh day, and shall look , etc.] On the seventh day from his shutting of it up, he shall open it again, go into it, and observe in what condition it is: and, behold, [if] the plague be spread in the walls of the house : the hollow strakes are become deeper, or the coloured spots are become larger: spreading was always a sign of leprosy, both in the bodies of men, and in garments.
Matthew Henry Commentary
Verses 33-53 - The leprosy in a house is unaccountable to us, as well as the lepros in a garment; but now sin, where that reigns in a house, is a plagu there, as it is in a heart. Masters of families should be aware, an afraid of the first appearance of sin in their families, and put it away, whatever it is. If the leprosy is got into the house, the infected part must be taken out. If it remain in the house, the whol must be pulled down. The owner had better be without a dwelling, tha live in one that was infected. The leprosy of sin ruins families an churches. Thus sin is so interwoven with the human body, that it mus be taken down by death.
Original Hebrew
ושׁב 7725 הכהן 3548 ביום 3117 השׁביעי 7637 וראה 7200 והנה 2009 פשׂה 6581 הנגע 5061 בקירת 7023 הבית׃ 1004